That's despite the fact that the federal special counsel said in one of the documents that Cohen was in touch as far back as 2015 with a Russian who offered "political synergy" with the Trump election campaign.

Sanders also says the filing pertaining to former campaign chair Paul Manafort "says absolutely nothing about the President" and is blaming the media for "trying to create a story where there isn't one."

Prosecutors say Manafort lied to them about his contacts with a Russian associate and Trump administration officials.

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6:30 p.m.

Court documents say former Trump campaign chairman Paul Manafort testified before a grand jury on two occasions as part of his plea deal.

Prosecutors from special counsel Robert Mueller's office have accused Manafort of violating the agreement by lying to investigators.

They say Manafort was called to testify before a grand jury on Oct. 26 and Nov. 2. The documents do not provide any additional details about the grand jury, or what it is probing.

Manafort cut the deal in September and agreed to plead guilty to two felonies. It headed off a second trial for Manafort related to his Ukrainian political consulting and unregistered foreign lobbying.

Prosecutors say Manafort met with investigators from Mueller's office and the FBI on 12 separate occasions. They allege he told "multiple discernible lies."

They say Manafort told investigators that he spoke with officials before and after they left the Trump administration. But they say a review of his electronic documents shows he had "additional contacts" with the officials.

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6 p.m.

President Donald Trump's former legal fixer was fielding outreach from Russians seeking to reach the Trump campaign as far back as 2015.

That's according to a new court filing from special counsel Robert Mueller's office in the case of Michael Cohen.

Robert Mueller will reveal more details about his Russia investigation on Friday as he faces court deadlines in the cases of two men who worked closely with President Donald Trump.

The special counsel and federal prosecutors in New York were filing court memos detailing the cooperation of longtime Trump legal fixer Michael Cohen, who has admitted lying to Congress and orchestrating hush-money payments to protect the president. And Mueller's team will be disclosing what it says former Trump campaign chairman Paul Manafort lied about to cause his plea deal to fall apart last month.

Cohen and Manafort are among five former Trump associates whom prosecutors have accused of lying either to federal investigators or to Congress.

The court filings will close out a week in which Mueller's team for the first time provided some details of the help they've received from former Trump national security adviser Michael Flynn. Prosecutors, who said Flynn's assistance was "substantial" and merited no prison time, disclosed that he had cooperated not only with the Russia investigation but also with at least one other undisclosed criminal probe.

The new details about Mueller's investigation are becoming public as Trump continues to lash out at the Russia investigation and those who help prosecutors. Trump has singled out Cohen, accusing him of lying to get a reduced prison sentence. The president also praised another associate, Roger Stone, for saying he wouldn't testify against him, and Trump said a pardon for Manafort isn't off the table.

In a series of Friday morning tweets, the president attacked individual law enforcement and intelligence officials by name and accused Mueller and Deputy Attorney General Rod Rosenstein — the Justice Department official who appointed him — of conflicts of interest. He also said his lawyers were preparing a "counter to the Mueller Report."

"Already 87 pages done, but obviously cannot complete until we see the final Witch Hunt Report," he said.

In the latest filings Friday, prosecutors were to weigh in on whether Cohen deserves prison time and, if so, how much. In doing so, they must provide a federal judge with at least some description of the assistance he's provided to their investigations — the Russia probe and a separate investigation led by the U.S. attorney's office in Manhattan.

In August, Cohen pleaded guilty to eight criminal counts, including tax evasion and campaign finance violations. He said Trump had directed him before the 2016 election to arrange payments to buy the silence of porn actress Stormy Daniels and former Playboy model Karen McDougal, both of whom alleged they had affairs with Trump.

Last week, Cohen made a surprise guilty plea to lying to Congress, a move that refocused attention on Trump's ties to Russia during the 2016 campaign.

He admitted he lied about the details of a proposed Trump Tower in Moscow, saying that talks about the project went on until June 2016 — longer than he previously said. Cohen also said he discussed the project with Trump during the presidential campaign, undercutting the then-Republican presidential candidate's statements that he didn't have any deals in Russia.

Trump has downplayed the project and stressed that he never put any money into the deal and ultimately decided not to do it.

In Manafort's case, prosecutors are expected to lay out what torpedoed the cooperation agreement he made when he pleaded guilty in September to two felony charges of conspiracy.

In late November, prosecutors said that Manafort had repeatedly lied to them but did not say about what. The allegations exposed him to the possibility of additional criminal charges and a lengthier prison sentence.

Manafort's attorneys have denied that he made false statements, and a judge is expected to hear from them before deciding whether he actually lied. Manafort, who was convicted in August in federal court in Virginia of eight financial crimes, also awaits sentencing in that case.

Also Friday, the Federal Bureau of Prisons confirmed that George Papadopoulos, the first person sent to prison in the Russia investigation, was released after serving his 14-day sentence.

The former Trump campaign foreign policy adviser pleaded guilty last year to lying to the FBI about his contacts with Russian intermediaries. Those contacts during the presidential campaign prompted the FBI in July 2016 to open a counterintelligence investigation. That investigation was later taken over by Mueller.

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